/*!	 valuenodeconstsetstatic.cpp
**	 Template File
**
**	Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
**	Copyright (c) 2010 Carlos López
**
**	This package is free software; you can redistribute it and/or
**	modify it under the terms of the GNU General Public License as
**	published by the Free Software Foundation; either version 2 of
**	the License, or (at your option) any later version.
**
**	This package is distributed in the hope that it will be useful,
**	but WITHOUT ANY WARRANTY; without even the implied warranty of
**	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
**	General Public License for more details.
**
*/

#ifdef USING_PCH
#	include "pch.h"
#else
#ifdef HAVE_CONFIG_H
#	include <config.h>
#endif

#include <synfig/general.h>

#include "valuenodeconstsetstatic.h"
#include <synfigapp/canvasinterface.h>

#include <synfigapp/localization.h>

#endif

using namespace std;
using namespace etl;
using namespace synfig;
using namespace synfigapp;
using namespace Action;

ACTION_INIT(Action::ValueNodeConstSetStatic);
ACTION_SET_NAME(Action::ValueNodeConstSetStatic, "ValueNodeConstSetStatic");
ACTION_SET_LOCAL_NAME(Action::ValueNodeConstSetStatic, N_("Forbid Animation"));
ACTION_SET_TASK(Action::ValueNodeConstSetStatic, "setstatic");
ACTION_SET_CATEGORY(Action::ValueNodeConstSetStatic, Action::CATEGORY_VALUEDESC | Action::CATEGORY_VALUENODE);
ACTION_SET_PRIORITY(Action::ValueNodeConstSetStatic, 0);
ACTION_SET_VERSION(Action::ValueNodeConstSetStatic, "0.0");
ACTION_SET_CVS_ID(Action::ValueNodeConstSetStatic, "$Id$");

Action::ValueNodeConstSetStatic::ValueNodeConstSetStatic():
    old_static_value()
{ }

Action::ParamVocab
Action::ValueNodeConstSetStatic::get_param_vocab()
{
    ParamVocab ret(Action::CanvasSpecific::get_param_vocab());

    ret.push_back(ParamDesc("value_node", Param::TYPE_VALUENODE)
                  .set_local_name(_("ValueNode"))
                 );

    return ret;
}

bool
Action::ValueNodeConstSetStatic::is_candidate(const ParamList &x)
{
    if (!candidate_check(get_param_vocab(), x)) {
        return false;
    }

    ValueNode::Handle value_node;
    ValueDesc value_desc(x.find("value_desc")->second.get_value_desc());

    if (value_desc.parent_is_value_node_const() || value_desc.parent_is_linkable_value_node()) {
        value_node = value_desc.get_value_node();
    } else {
        value_node = x.find("value_node")->second.get_value_node();
    }

    // We need a constant value node or a constant layer param.
    return (
               (ValueNode_Const::Handle::cast_dynamic(value_node) &&
                // We need the constant value node to be not static.
                !ValueNode_Const::Handle::cast_dynamic(value_node)->get_static())
           );
}

bool
Action::ValueNodeConstSetStatic::set_param(const synfig::String& name, const Action::Param &param)
{
    if (!value_node && name == "value_desc" && param.get_type() == Param::TYPE_VALUEDESC) {
        ValueDesc value_desc(param.get_value_desc());

        if (!value_desc.parent_is_value_node()) {
            return false;
        }

        value_node = ValueNode_Const::Handle::cast_dynamic(value_desc.get_value_node());

        if (!value_node) {
            return false;
        }

        return true;
    }

    if (!value_node && name == "value_node" && param.get_type() == Param::TYPE_VALUENODE) {
        value_node = ValueNode_Const::Handle::cast_dynamic(param.get_value_node());

        if (!value_node) {
            return false;
        }

        return true;
    }

    return Action::CanvasSpecific::set_param(name, param);
}

bool
Action::ValueNodeConstSetStatic::is_ready()const
{
    if (!value_node) {
        return false;
    }

    return Action::CanvasSpecific::is_ready();
}

void
Action::ValueNodeConstSetStatic::perform()
{
    old_static_value = value_node->get_static();

    if (old_static_value == true) {
        set_dirty(false);
        return;
    }

    set_dirty(true);
    value_node->set_static(true);

    value_node->changed();
}

void
Action::ValueNodeConstSetStatic::undo()
{
    if (old_static_value == value_node->get_static()) {
        set_dirty(false);
        return;
    }

    set_dirty(true);
    value_node->set_static(old_static_value);

    value_node->changed();

}